Pressure-regulator valve.



S. H. TOLMAN.

PRESSURE REGULATOR VALVE.

APPLICATION man MAY11915.

1,199,320. Patentedsept. 26,1916.

Z f l SCOTT I-I. TOLIVIAN, OF BOSTON, MASSACHUSETTS.

PRESSURE-REGULATOR VALVE.

Specification of 'Letters Patent.

Patented Sept. 26, 1916.

Application filed 'May 7, 1915. Serial No. 26,490.

To NZZ Iwhom Z5 wmg/ Conccwi Be it known that I, Soo'rr H. ToLMaN, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful improvements in Pressure-Regulator Valves, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates particularly to means for not only facilitating the assemblage of the valve and cooperating parts, but also insuring a perfect adjustment of the valve, when assembled, in relation to the valve nozzle.

One feature of my invention may be said to reside in a perfect iachine formed valve seat in a saddle secured in the usual manner to the diaphragm; that is, a seat in the saddle itself, and not in a member which has to be mounted and secured to a diaphragmframe; while another feature may be found in the combination with such seat, of a suitable valve, and means for securing said valve in said seat.

In the drawings illustrating the principle of my invention and the best mode now known to me of embodying the same in operative structure, Figure 1 is a vertical section of a. pressure regulating valve provided with my invention. Fig. 2 shows in perspective features of my invention arranged in position for assemblage; together with a ,Spanner used for that purpose. Figs. 3 and 4c are respectively a bottom and a top plan of the spanner.

lith they exception of the structure embracing the features of my invention, the pressure regulating valve is of the form commonly known. The upper andthe lower sections of the casing, 1, 2, are provided with screw connection 3, and hold a diaphragm 4. The lower section contains a coil spring 5, abutting the lower face of the diaphragm and having its tension, and hence that of the diaphragm, regulated by the operation of an adjusting screw 6.

Centrally and vertically mounted upon the diaphragm is a saddle rmember 7. It is cylindrical; has a cylindrical valve seat opening S in its free end portion, the bottom of the opening forming the valve seat 9 and being in a plane absolutely at right angles to the longitudinal axis of the saddle; a transverse nozzle slot 10 below the valve seat opening and extending diametrically through the saddle; a longitudinal assembling slot 11, less in width than the diameter of the valve seat opening 8 connecting the transverse nozzle slot 10 with the bottom of the latter opening and the free end 9 of the saddle 7, F ig. 2, for the purpose of facilitating the mounting and the demounting of a valve 12 in and from its seat. A brass ring 13 with parallel sides, and of the diameter of the valve opening, rests upon the valve seat 9, while a disk of hard fiber, and having the saine diameter is supported by the brass ring and constitutes the valve 12. Upon the top of the valve rests a guide lock disk 111 of like diameter but of such thickness that its top surface is slightly above the free end 9 of the saddle. It is tb be noticed that through the side of the saddle, these three members v12, 13, and la, Fig. 2, are exposed and can be removed with great ease, when required, by ones own fingers. This lock disk may be provided with an integral guide member 15 centrally disposed, and made use of in a manner later to be fully described.

To rigidly secure the valve l2 in its perfect seat 9 there is employed a lock cap 16 provided with interior threads to engage those corresponding upon the outside free end portion of the saddle. It has a hole through its top to allow the passage of the guide member 15 of the lock disk; and two small Spanner holes 17, diametrically opposite whereby by means of a Spanner 18, the lock cap 16 may be screwed down upon the saddle 7 and, by engaging the top surk face of the lock disk 111 force the Valve 12 into perfectadjustinent with its seat 9 and hence the valve nozzle 19. In short, the position of the valve seat 9 in relation to the saddle 7 can never be changed, because the seat is an integral part of the saddle. In all other pressure regulating valves, the valve seat is in a member which is not integral with the saddle, and has to ,be secured thereto, as by a number of screws which are or may be never set up exactly the same, with the result the valve does not occupy exactly the same position as is absolutely required if the pressure regulating valve is to act with uniformity, regardless of the number of times it is taken down and set up.

The aboveementioned parts having been assembled, a screw threaded cap 20, with a suitable guide slot 21 for the guide member 15 of the lock disk 14., is screwed down upon adjusted in relation to the diaphragm, when assembled and secured in the saddle.

Desiring -to protect my invention in the broadest manner legally possible, what I claim is l. In a pressure regulating valve, a diaphragm; a saddle fixed thereto, having formed integral therewith a valve seat; and an adjusting slot extending from below said seat to the free end of the saddle, to facilitate the assemblage or the removal of the valve in or from its seat in the saddle.

2. In a pressure regulating valve, a dia phragm; a saddle in one piece iixed thereto i and having a valveseat formed therein; an adjusting slot extending from below said seat to the free end of the saddle; a valve member supported by said seat; and a screw member whereby said valve may be caused to find its seat.

3. In a pressure regulating valve having Copies ot this patent may be obtained for ve cents each, by addressing the Commissioner of '.Patents,;

4. In a. pressure regulating valve having a diaphragm; a saddle fixed thereto, said saddle having formed integral therewith, a valve seat; a valve member supported by said seat; and a lock member whereby said valve may be caused to find its seat z-a lock cap provided with screw threads, to engage a correspondingly threaded Vportion of the saddle, whereby the cap may be screwed into engagement with the loclr member and pre-Y vent the latter and the valve fromA changing the position of the valve in relation with its seat in the saddle.

In testimony whereof I hereunto aliix my signature in the presence of two witnesses.

SCOTT H. TOLMAN.

Vitnesses A. I. CRAWFORD, CHARLES F. RrcHARDsoN.

Washington, D. C. 

